Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5db98f3d627b10a…

MALICIOUS

PDF

418.4 KB Created: 2021-06-12 09:21:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-27
MD5: 9a17ba27901eebce880c164cdd72b0b5 SHA-1: aeece28972d472fecb15d8d0a5444fbbc0a49feb SHA-256: c5db98f3d627b10acc97033f0b69a6229c151cb26922a9d6ddb53f41918f953d
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6147

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://pistant.ru/uplcv?utm_term=empower+c1+workbook+pdf PDF link annotation
    • https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/92d31f44d2e78356fc40dcdcee84a1c2/vokelabuveb.pdfIn PDF document text
    • https://mziagroup.com/wp-content/plugins/super-forms/uploads/php/files/ucjsg28i6rq1c37focdg03d3mf/29605346758.pdfIn PDF document text
    • http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/160756ad5e2998---57636845816.pdfIn PDF document text
    • https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090ad685ef61---sizuxejozili.pdfIn PDF document text
    • https://rubin2000-distribuitorshop.ro/userfiles/file/ragizukuxolemagag.pdfIn PDF document text
    • http://littlepearlbooks.in/data/eimages/file/nugutomoderaresasuf.pdfIn PDF document text
    • https://donnasalon.ru/wp-content/plugins/super-forms/uploads/php/files/bdeeccdc5492596f60290d06e63f0dc6/filamegulugemenuvoluz.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/pnblc7igl3clgtj81n6hf5cf67/89464034642.pdfIn PDF document text
    • http://clinicaveterinariabilancino.it/userfiles/files/41866452611.pdfIn PDF document text
    • https://centrobrands.com/wp-content/plugins/super-forms/uploads/php/files/8669b38f439bacc3f6686b117d2b2897/diwugibisowetelalop.pdfIn PDF document text
    • https://prsnashville.com/wp-content/plugins/super-forms/uploads/php/files/070159f3bd7a4df9dfdd7be430260c5f/davir.pdfIn PDF document text
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160784a211b1ab---kilaroxuxerisowesilofiru.pdfIn PDF document text
    • https://freedomhypnosisnyc.com/wp-content/plugins/super-forms/uploads/php/files/1e9e44ff526efa25a9bfe5d206547fb6/50873560832.pdfIn PDF document text
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/21d2e50b236da374125bae7b7dcc6dca/61432204667.pdfIn PDF document text
    • http://asustainable.com/global/file/lilaf.pdfIn PDF document text
    • https://psychologgia.pl/Upload/file/pijepibukenubixawe.pdfIn PDF document text
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/16092478cf0a52---pavijanologegasovemenuteg.pdfIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_013_off00062c4f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x62C4F 23696 bytes
SHA-256: 7e4bb80c00c1d83641f1430b5b9a78244c13e3467fa0dbf9ab645c22367cac8a
stream_014_off00065736.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x65736 10476 bytes
SHA-256: db8ee21f9fa6507bfbc8a2ae840d51dfcc5e5ff93afaaff73ae7cf4c9fefdae5
font_00_sfnt_off00051a67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51A67 46148 bytes
SHA-256: b6cd967d08d832be96ebcd571edc8dc8e7afdfc8d839e91fd845579510d66e04
font_01_sfnt_off0005a63a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A63A 5188 bytes
SHA-256: fd601c2762d1016de71d6cdb13657e1a4259893c4f75ede93a1b40ebc9a33fe4
font_02_sfnt_off0005b7e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B7E5 12136 bytes
SHA-256: d12406a816270c7f4553aeba5dcfaa8a4284fd42b184f66382ff41a274bc4d75
font_03_sfnt_off0005dd67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DD67 7616 bytes
SHA-256: 9bc2d156e5fdabeb011047a78f123f2ce752ee6df54b00c0ecfa76a0dc36c8ab
font_04_sfnt_off0005f6b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F6B6 18020 bytes
SHA-256: 25fc757499fb56148fd7ab1043987482bff155e5f76803c0b7d37938382c1104

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